/// <summary>
/// Creates a block from the content of a <see cref="DxfDocument">document</see>.
/// </summary>
/// <param name="doc">A <see cref="DxfDocument">DxfDocument</see> instance.</param>
/// <param name="name">Name of the new block.</param>
/// <returns>The block build from the <see cref="DxfDocument">document</see> content.</returns>
/// <remarks>Only the entities contained in ModelSpace will make part of the block.</remarks>
public static Block Create(DxfDocument doc, string name)
{
if (doc == null)
{
throw new ArgumentNullException(nameof(doc));
}
Block block = new Block(name)
{
Origin = doc.DrawingVariables.InsBase
};
block.Record.Units = doc.DrawingVariables.InsUnits;
List <DxfObject> entities = doc.Layouts.GetReferences(Layout.ModelSpaceName);
foreach (DxfObject dxfObject in entities)
{
EntityObject entity = dxfObject as EntityObject;
if (entity == null)
{
continue;
}
EntityObject clone = (EntityObject)entity.Clone();
AttributeDefinition attdef = clone as AttributeDefinition;
if (attdef != null)
{
block.AttributeDefinitions.Add(attdef);
continue;
}
block.Entities.Add(clone);
}
return(block);
}
/// <summary>
/// build a clone of the given entity with coord transformed accordingly given function.
/// </summary>
public static EntityObject CoordTransform(this EntityObject eo, Func <Vector3D, Vector3D> transform, Vector3D origin = null)
{
switch (eo.Type)
{
case EntityType.Insert:
{
var ins = (Insert)eo.Clone();
ins.Position = transform(ins.Position);
return(ins);
}
case EntityType.Line:
{
var line = (Line)eo.Clone();
line.StartPoint = transform(line.StartPoint);
line.EndPoint = transform(line.EndPoint);
return(line);
}
case EntityType.Text:
{
var text = (Text)eo.Clone();
text.Position = transform(text.Position);
return(text);
}
case EntityType.MText:
{
var mtext = (MText)eo.Clone();
mtext.Position = transform(mtext.Position);
return(mtext);
}
case EntityType.Circle:
{
var circle = (Circle)eo.Clone();
{
var c = transform(circle.Center);
if (origin != null)
{
c -= origin;
}
circle.Center = c;
}
{
var r = transform(new Vector3D(circle.Radius, 0));
if (origin != null)
{
r -= origin;
}
circle.Radius = r.Length;
}
return(circle);
}
case EntityType.Point:
{
var point = (Point)eo.Clone();
point.Position = transform(point.Position);
return(point);
}
case EntityType.LightWeightPolyline:
{
var lw = (LwPolyline)eo.Clone();
lw.Vertexes.ForEach(w =>
{
w.Position = transform(w.Position.ToVector3D()).ToVector2();
});
return(lw);
}
default: throw new NotImplementedException($"not implemented coord transform for entity [{eo.Type}]");
}
}
